The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Isolated Feedback of Inverter DC-Link Voltage Using Flyback Converters

플라이백 컨버터를 이용한 인버터 직류링크 전압의 절연 궤환

  • Received : 2018.06.05
  • Accepted : 2018.06.25
  • Published : 2018.08.20
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Abstract

An isolated feedback method for measuring the inverter DC-link voltage is proposed. This method provides a simple and economical solution to inverter control systems that use a flyback converter as a controller power supply. In the proposed method, data on the DC-link voltage are acquired when the primary side voltage appears on the secondary side of the flyback transformer, thereby eliminating the need to adopt an extra signal isolation method. To solve the non-synchronization problem between the flyback converter switching and main controller sampling, the external interrupt function of the micro-controller is used as a trigger signal for the A/D conversion.

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References

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